<template>
  <div class="child2">
    <h3>子组件2</h3>
		<h4>电脑：{{ computer }}</h4>
    <h4>哥哥给的玩具：{{toy}}</h4>
  </div>
</template>

<script setup lang="ts" name="Child2">
	import {ref,onUnmounted} from 'vue'
	import emitter from '@/utils/emitter';
	// 数据
	let computer = ref('联想')
  let toy = ref('')

  //给emitter绑定send-toy事件
  emitter.on('send-toy',(value:any)=>{
    toy.value = value
  })

  //在组件卸载时解绑send-toy事件
  onUnmounted(()=>{
    emitter.off('send-toy')
  })

</script>

<style scoped>
	.child2{
		margin-top: 50px;
		background-color: orange;
		padding: 10px;
		box-shadow: 0 0 10px black;
		border-radius: 10px;
	}
</style>
